Modern pharmaceuticals struggle to control diseases caused by viruses. Few work for long because viruses are constantly changing. This companion to Herbal Antibiotics by the same author is a powerful argument for a new look at herbs because they work in multidimensional ways that hamper the ability of viruses to adjust. Take elderberry, one of seven antiviral herbs covered in depth: not only does it slow the replication of cold and flu viruses, it also acts on the bacteria that follow the viruses and weaken the system further and help viruses to spread.